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path: root/test/tc_loader.py
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# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os.path
import sys
rangerpath = os.path.join(os.path.dirname(__file__), '..')
if sys.path[1] != rangerpath:
	sys.path[1:1] = [rangerpath]

import unittest
import os
from os.path import realpath, join, dirname

from testlib import Fake
from ranger.core.shared import FileManagerAware, SettingsAware
from ranger.core.loader import Loader
from ranger.fsobject import Directory, File
from ranger.ext.openstruct import OpenStruct

TESTDIR = realpath(join(dirname(__file__), 'testdir'))
#TESTDIR = "/usr/sbin"

class Test1(unittest.TestCase):
	def test_loader(self):
		loader = Loader()
		fm = OpenStruct(loader=loader)
		SettingsAware.settings = Fake()
		FileManagerAware.fm = fm

		# initially, the loader has nothing to do
		self.assertFalse(loader.has_work())

		dir = Directory(TESTDIR)
		self.assertEqual(None, dir.files)
		self.assertFalse(loader.has_work())

		# Calling load_content() will enqueue the loading operation.
		# dir is not loaded yet, but the loader has work
		dir.load_content(schedule=True)
		self.assertEqual(None, dir.files)
		self.assertTrue(loader.has_work())

		iterations = 0
		while loader.has_work():
			iterations += 1
			loader.work()
		#print(iterations)
		self.assertNotEqual(None, dir.files)
		self.assertFalse(loader.has_work())
#
#	def test_get_overhead_of_loader(self):
#		N = 5
#		tloader = benchmark_load(N)
#		traw = benchmark_raw_load(N)
#		#traw1k = 250.0
#		#traw = traw1k * N / 1000.0
#		#print("Loader: {0}s".format(tloader))
#		#print("Raw:    {0}s".format(traw))
#		self.assertTrue(tloader > traw)
#		overhead = tloader * 100 / traw - 100
#		self.assertTrue(overhead < 2, "overhead of loader too high: {0}" \
#				.format(overhead))
#		#print("Overhead: {0:.5}%".format(overhead))


if __name__ == '__main__':
	unittest.main()
enos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; } td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; } span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; } .highlight .hll { background-color: #ffffcc } .highlight .c { color: #888888 } /* Comment */ .highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */ .highlight .k { color: #008800; font-weight: bold } /* Keyword */ .highlight .ch { color: #888888 } /* Comment.Hashbang */ .highlight .cm { color: #888888 } /* Comment.Multiline */ .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888888 } /* Comment.Single */ .highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */ .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */ .highlight .go { color: #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
## the basic editor data structure, and how it displays text to the screen

# temporary main for this layer: just render the given text at the given
# screen dimensions, then stop
def! main text:address:shared:array:character [
  local-scope
  load-ingredients
  open-console
  hide-screen 0/screen
  new-editor text, 0/screen, 0/left, 5/right
  show-screen 0/screen
  wait-for-event 0/console
  close-console
]

scenario editor-initially-prints-text-to-screen [
  assume-screen 10/width, 5/height
  run [
    1:address:shared:array:character <- new [abc]
    new-editor 1:address:shared:array:character, screen:address:shared:screen, 0/left, 10/right
  ]
  screen-should-contain [
    # top line of screen reserved for menu
    .          .
    .abc       .
    .          .
  ]
]

container editor-data [
  # editable text: doubly linked list of characters (head contains a special sentinel)
  data:address:shared:duplex-list:character
  top-of-screen:address:shared:duplex-list:character
  bottom-of-screen:address:shared:duplex-list:character
  # location before cursor inside data
  before-cursor:address:shared:duplex-list:character

  # raw bounds of display area on screen
  # always displays from row 1 (leaving row 0 for a menu) and at most until bottom of screen
  left:number
  right:number
  bottom:number
  # raw screen coordinates of cursor
  cursor-row:number
  cursor-column:number
]

# creates a new editor widget and renders its initial appearance to screen
#   top/left/right constrain the screen area available to the new editor
#   right is exclusive
def new-editor s:address:shared:array:character, screen:address:shared:screen, left:number, right:number -> result:address:shared:editor-data, screen:address:shared:screen [
  local-scope
  load-ingredients
  # no clipping of bounds
  right <- subtract right, 1
  result <- new editor-data:type
  # initialize screen-related fields
  x:address:number <- get-address *result, left:offset
  *x <- copy left
  x <- get-address *result, right:offset
  *x <- copy right
  # initialize cursor
  x <- get-address *result, cursor-row:offset
  *x <- copy 1/top
  x <- get-address *result, cursor-column:offset
  *x <- copy left
  init:address:address:shared:duplex-list:character <- get-address *result, data:offset
  *init <- push 167/§, 0/tail
  top-of-screen:address:address:shared:duplex-list:character <- get-address *result, top-of-screen:offset
  *top-of-screen <- copy *init
  y:address:address:shared:duplex-list:character <- get-address *result, before-cursor:offset
  *y <- copy *init
  result <- insert-text result, s
  # initialize cursor to top of screen
  y <- get-address *result, before-cursor:offset
  *y <- copy *init
  # initial render to screen, just for some old tests
  _, _, screen, result <- render screen, result
  <editor-initialization>
]

def insert-text editor:address:shared:editor-data, text:address:shared:array:character -> editor:address:shared:editor-data [
  local-scope
  load-ingredients
  # early exit if text is empty
  return-unless text, editor/same-as-ingredient:0
  len:number <- length *text
  return-unless len, editor/same-as-ingredient:0
  idx:number <- copy 0
  # now we can start appending the rest, character by character
  curr:address:shared:duplex-list:character <- get *editor, data:offset
  {
    done?:boolean <- greater-or-equal idx, len
    break-if done?
    c:character <- index *text, idx
    insert c, curr
    # next iter
    curr <- next curr
    idx <- add idx, 1
    loop
  }
  return editor/same-as-ingredient:0
]

scenario editor-initializes-without-data [
  assume-screen 5/width, 3/height
  run [
    1:address:shared:editor-data <- new-editor 0/data, screen:address:shared:screen, 2/left, 5/right
    2:editor-data <- copy *1:address:shared:editor-data
  ]
  memory-should-contain [
    # 2 (data) <- just the § sentinel
    # 3 (top of screen) <- the § sentinel
    4 <- 0  # bottom-of-screen; null since text fits on screen
    # 5 (before cursor) <- the § sentinel
    6 <- 2  # left
    7 <- 4  # right  (inclusive)
    8 <- 1  # bottom
    9 <- 1  # cursor row
    10 <- 2  # cursor column
  ]
  screen-should-contain [
    .     .
    .     .
    .     .
  ]
]

# Assumes cursor should be at coordinates (cursor-row, cursor-column) and
# updates before-cursor to match. Might also move coordinates if they're
# outside text.
def render screen:address:shared:screen, editor:address:shared:editor-data -> last-row:number, last-column:number, screen:address:shared:screen, editor:address:shared:editor-data [
  local-scope
  load-ingredients
  return-unless editor, 1/top, 0/left, screen/same-as-ingredient:0, editor/same-as-ingredient:1
  left:number <- get *editor, left:offset
  screen-height:number <- screen-height screen
  right:number <- get *editor, right:offset
  # traversing editor
  curr:address:shared:duplex-list:character <- get *editor, top-of-screen:offset
  prev:address:shared:duplex-list:character <- copy curr  # just in case curr becomes null and we can't compute prev
  curr <- next curr
  # traversing screen
  +render-loop-initialization
  color:number <- copy 7/white
  row:number <- copy 1/top
  column:number <- copy left
  cursor-row:address:number <- get-address *editor, cursor-row:offset
  cursor-column:address:number <- get-address *editor, cursor-column:offset
  before-cursor:address:address:shared:duplex-list:character <- get-address *editor, before-cursor:offset
  screen <- move-cursor screen, row, column
  {
    +next-character
    break-unless curr
    off-screen?:boolean <- greater-or-equal row, screen-height
    break-if off-screen?
    # update editor-data.before-cursor
    # Doing so at the start of each iteration ensures it stays one step behind
    # the current character.
    {
      at-cursor-row?:boolean <- equal row, *cursor-row
      break-unless at-cursor-row?
      at-cursor?:boolean <- equal column, *cursor-column
      break-unless at-cursor?
      *before-cursor <- copy prev
    }
    c:character <- get *curr, value:offset
    <character-c-received>
    {
      # newline? move to left rather than 0
      newline?:boolean <- equal c, 10/newline
      break-unless newline?
      # adjust cursor if necessary
      {
        at-cursor-row?:boolean <- equal row, *cursor-row
        break-unless at-cursor-row?
        left-of-cursor?:boolean <- lesser-than column, *cursor-column
        break-unless left-of-cursor?
        *cursor-column <- copy column
        *before-cursor <- prev curr
      }
      # clear rest of line in this window
      clear-line-delimited screen, column, right
      # skip to next line
      row <- add row, 1
      column <- copy left
      screen <- move-cursor screen, row, column
      curr <- next curr
      prev <- next prev
      loop +next-character:label
    }
    {
      # at right? wrap. even if there's only one more letter left; we need
      # room for clicking on the cursor after it.
      at-right?:boolean <- equal column, right
      break-unless at-right?
      # print wrap icon
      wrap-icon:character <- copy 8617/loop-back-to-left
      print screen, wrap-icon, 245/grey
      column <- copy left
      row <- add row, 1
      screen <- move-cursor screen, row, column
      # don't increment curr
      loop +next-character:label
    }
    print screen, c, color
    curr <- next curr
    prev <- next prev
    column <- add column, 1
    loop
  }
  # save first character off-screen
  bottom-of-screen:address:address:shared:duplex-list:character <- get-address *editor, bottom-of-screen:offset
  *bottom-of-screen <- copy curr
  # is cursor to the right of the last line? move to end
  {
    at-cursor-row?:boolean <- equal row, *cursor-row
    cursor-outside-line?:boolean <- lesser-or-equal column, *cursor-column
    before-cursor-on-same-line?:boolean <- and at-cursor-row?, cursor-outside-line?
    above-cursor-row?:boolean <- lesser-than row, *cursor-row
    before-cursor?:boolean <- or before-cursor-on-same-line?, above-cursor-row?
    break-unless before-cursor?
    *cursor-row <- copy row
    *cursor-column <- copy column
    *before-cursor <- copy prev
  }
  bottom:address:number <- get-address *editor, bottom:offset
  *bottom <- copy row
  return row, column, screen/same-as-ingredient:0, editor/same-as-ingredient:1
]

def clear-line-delimited screen:address:shared:screen, column:number, right:number -> screen:address:shared:screen [
  local-scope
  load-ingredients
  space:character <- copy 32/space
  bg-color:number, bg-color-found?:boolean <- next-ingredient
  {
    # default bg-color to black
    break-if bg-color-found?
    bg-color <- copy 0/black
  }
  {
    done?:boolean <- greater-than column, right
    break-if done?
    screen <- print screen, space, 7/white, bg-color  # foreground color is mostly unused except if the cursor shows up at this cell
    column <- add column, 1
    loop
  }
]

def clear-screen-from screen:address:shared:screen, row:number, column:number, left:number, right:number -> screen:address:shared:screen [
  local-scope
  load-ingredients
  # if it's the real screen, use the optimized primitive
  {
    break-if screen
    clear-display-from row, column, left, right
    return screen/same-as-ingredient:0
  }
  # if not, go the slower route
  screen <- move-cursor screen, row, column
  clear-line-delimited screen, column, right
  clear-rest-of-screen screen, row, left, right
  return screen/same-as-ingredient:0
]

def clear-rest-of-screen screen:address:shared:screen, row:number, left:number, right:number -> screen:address:shared:screen [
  local-scope
  load-ingredients
  row <- add row, 1
  screen <- move-cursor screen, row, left
  screen-height:number <- screen-height screen
  {
    at-bottom-of-screen?:boolean <- greater-or-equal row, screen-height
    break-if at-bottom-of-screen?
    screen <- move-cursor screen, row, left
    clear-line-delimited screen, left, right
    row <- add row, 1
    loop
  }
]

scenario editor-initially-prints-multiple-lines [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abc
def]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 0/left, 5/right
  ]
  screen-should-contain [
    .     .
    .abc  .
    .def  .
    .     .
  ]
]

scenario editor-initially-handles-offsets [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abc]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 1/left, 5/right
  ]
  screen-should-contain [
    .     .
    . abc .
    .     .
  ]
]

scenario editor-initially-prints-multiple-lines-at-offset [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abc
def]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 1/left, 5/right
  ]
  screen-should-contain [
    .     .
    . abc .
    . def .
    .     .
  ]
]

scenario editor-initially-wraps-long-lines [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abc def]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 0/left, 5/right
  ]
  screen-should-contain [
    .     .
    .abc .
    .def  .
    .     .
  ]
  screen-should-contain-in-color 245/grey [
    .     .
    .    .
    .     .
    .     .
  ]
]

scenario editor-initially-wraps-barely-long-lines [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abcde]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 0/left, 5/right
  ]
  # still wrap, even though the line would fit. We need room to click on the
  # end of the line
  screen-should-contain [
    .     .
    .abcd.
    .e    .
    .     .
  ]
  screen-should-contain-in-color 245/grey [
    .     .
    .    .
    .     .
    .     .
  ]
]

scenario editor-initializes-empty-text [
  assume-screen 5/width, 5/height
  run [
    1:address:shared:array:character <- new []
    2:address:shared:editor-data <- new-editor 1:address:shared:array:character, screen:address:shared:screen, 0/left, 5/right
    3:number <- get *2:address:shared:editor-data, cursor-row:offset
    4:number <- get *2:address:shared:editor-data, cursor-column:offset
  ]
  screen-should-contain [
    .     .
    .     .
    .     .
  ]
  memory-should-contain [
    3 <- 1  # cursor row
    4 <- 0  # cursor column
  ]
]

# just a little color for mu code

scenario render-colors-comments [
  assume-screen 5/width, 5/height
  run [
    s:address:shared:array:character <- new [abc
# de
f]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 0/left, 5/right
  ]
  screen-should-contain [
    .     .
    .abc  .
    .# de .
    .f    .
    .     .
  ]
  screen-should-contain-in-color 12/lightblue, [
    .     .
    .     .
    .# de .
    .     .
    .     .
  ]
  screen-should-contain-in-color 7/white, [
    .     .
    .abc  .
    .     .
    .f    .
    .     .
  ]
]

after <character-c-received> [
  color <- get-color color, c
]

# so far the previous color is all the information we need; that may change
def get-color color:number, c:character -> color:number [
  local-scope
  load-ingredients
  color-is-white?:boolean <- equal color, 7/white
  # if color is white and next character is '#', switch color to blue
  {
    break-unless color-is-white?
    starting-comment?:boolean <- equal c, 35/#
    break-unless starting-comment?
    trace 90, [app], [switch color back to blue]
    color <- copy 12/lightblue
    jump +exit:label
  }
  # if color is blue and next character is newline, switch color to white
  {
    color-is-blue?:boolean <- equal color, 12/lightblue
    break-unless color-is-blue?
    ending-comment?:boolean <- equal c, 10/newline
    break-unless ending-comment?
    trace 90, [app], [switch color back to white]
    color <- copy 7/white
    jump +exit:label
  }
  # if color is white (no comments) and next character is '<', switch color to red
  {
    break-unless color-is-white?
    starting-assignment?:boolean <- equal c, 60/<
    break-unless starting-assignment?
    color <- copy 1/red
    jump +exit:label
  }
  # if color is red and next character is space, switch color to white
  {
    color-is-red?:boolean <- equal color, 1/red
    break-unless color-is-red?
    ending-assignment?:boolean <- equal c, 32/space
    break-unless ending-assignment?
    color <- copy 7/white
    jump +exit:label
  }
  # otherwise no change
  +exit
  return color
]

scenario render-colors-assignment [
  assume-screen 8/width, 5/height
  run [
    s:address:shared:array:character <- new [abc
d <- e
f]
    new-editor s:address:shared:array:character, screen:address:shared:screen, 0/left, 8/right
  ]
  screen-should-contain [
    .        .
    .abc     .
    .d <- e  .
    .f       .
    .        .
  ]
  screen-should-contain-in-color 1/red, [
    .        .
    .        .
    .  <-    .
    .        .
    .        .
  ]
]